Longitudinal rib embossment in tri-apertured, substantially planar electrode

Abstract

The invention relates to an improved one-piece electrode member for use in an in-line multi-beam cathode ray tube electron gun assembly. The improved electrode has a plurality of spaced apart in-line apertures individually oriented in cup-like depressions which are collectively encompassed by a configurated continuous rim forming a cup encompassing unitized portion within the member. Formed contiguously with each side of the unit is a substantially longitudinal rib embossment having at least one complementary rib projecting therefrom in an angular manner to extend through supporting projections of the electrode. The discretely located conjunctive embossing configurations of the member provide marked strengthening to the in-line structure.

What is claimed is: 
     
       1. An improvement in a plural electrode in-line multi-beam cathode ray tube electron gun assembly integrated by a plurality of longitudinal insulative support means, said improvement comprising: a one-piece electrode member of substantially planar formation having opposed sides and end portions and definitive 1--1' and w--w' axes therein, said member having at least one supporting projection extending from each side thereof to provide positional means for attachment of said member to said assembly supportive means; said member having an alpha planar level from which a plurality of individual longitudinally aligned cup-like shapings are impressed, each of said cups having a formed side wall and a substantially flat bottom with an axial aperture therethrough, the bottoms of said cup being oriented in an omega planar level parallelly spaced from said alpha planar level, said plurality of aligned cups being treated within said member as a longitudinal unitized portion having a continuous turned-perimeter thereabout defining an encompassing rim extending normal to said alpha planar level, the longitudinal sides of said cup-encompassing portion being parallel with said 1--1' axis, said electrode member having a substantially longitudinal rib embossment formed on either side thereof, with at least one complementary rib projecting outward therefrom in a normal manner to form a rib combination, each of said longitudinal rib embossments being transitionally configurated from the terminal region of the respective longitudinal portion of the turned perimeter of said cup encompassing unit, the complementary rib means of said combination being oriented to extend through each of said supporting projections.   
     
     
       2. The improved one-piece electrode member according to claim 1 wherein each of said longitudinal rib embossment and complementary rib combinations is formed as a substantially T-shaped configuration whereof said longitudinal rib constitutes the spread portion and said complementary rib the rise portion thereof. 
     
     
       3. The improved one-piece electrode member according to claim 2 wherein said turned perimeter terminates in a beta planar level intermediate to and parallel with said alpha and omega planar levels, said beta planar level being the level of said supporting projections. 
     
     
       4. The improved one-piece electrode member according to claim 2 wherein the outer surface of the spread portion of said T-shaped rib is substantially in said omega planar level. 
     
     
       5. The improved one-piece electrode member according to claim 2 wherein the complementary rib formed in said rise portion is of a depth less than that of the rib in said spread portion. 
     
     
       6. The improved one-piece electrode member according to claim 1 wherein said member has two spaced-apart supporting projections extending from either side thereof, and wherein each of said longitudinal rib embossments and complementary rib combinations are formed as substantially pi (π) shaped configurations comprised of a longitudinal rib constituting the spread portion and two complementary ribs the rise portions thereof, the outer surface of said spread portion being substantially in said omega planar level, and said complementary rib rise portions being oriented substantially in a beta planar level intermediate to and parallel with said alpha and omega planar levels.